Sewer construction.



, J. H. ZIN N. SEWER CONSTRUCTION,

APPLIOATION FILED JULY 24, 1908.

932,743. Patented Aug. 31, 1909.

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JAcoB HALLEcK zinn, or INDIANAPOLIS, INDIANA.

SEWER "cons'rnucrron.

Specification of Letters Patent.

Application filed July 24, 1908. Serial No. 445,251.

more sanitary than the ordinary cement sewers now extensively used andat the same time less expensive and capable of easier and more rapidinstallation, the completed sewer being practically continuous orunbroken from end to end, or in other words, without any open jointstherein.

With the above and other objects in View, the nature of which will morefully appear the description proceeds, the invention consists in thenovel construction, combination and arrangement of parts as herein fullydescribed, illustrated and claimed.

In the accompanying drawings :Figure 1 is a vertical cross sectionthrough a sewer embodying the present invention. Fig. 2 is a verticallongitudinalsection through the same showing the manner of unitingadjoinone of the sewer sections. Fig. 4 is a detail vertical crosssection showing the means for causing the sewer sections to drain offwater during installation. Fig. 5 is a vertical cross section showing amodified form of section.

The construction of the sections of the,

sewer is best illustrated in Fig, 3 in which one of the sections isshown in detail wherein it is seen to comprise a cylindrical body 1 anda base 2, the base forming a reinforcement for the body 1 and in thepreferred embodiment of the invention comprising a fiat supportingbottom 3. Atthe opposite sides the base extends partially upward alongthe sides of the body and is. made sufliciently thicker than the bodyto, provide oppositely located shoulders or ledges which extendlengthwise of the section and provide a support for a body of concreteindicated at 5.

any usual composition such as Portland cement, sand and gravel orcrushed stone, while the body 1 and base 2 of the sewer sections arepreferably composed of vitrified clay, which is salt glazed so as not toadmit ing sections. Fig. 3 is a perspective view of The concrete body5-may be composed of of the lodging or adherence thereto of sediment. Itwill also be observed by reference to Figs. 2 and 3 that the base 2 isextended at one end beyond the corresponding end of the body 1 to. forma stay or socket 6 to receive the adjacent end of the adjoining section,the body of which projects beyond the base as shown at 7. In this waythe sec tions of the sewer overlap each other or more accuratelyspeaking, the body portion of one section overlaps the base portion ofthe adjoining sections thus attaining an accurate alinement of all ofthe sections. The outer coating 5 is applied to the sections after thesame have been placed in the ditch and combined in the manner abovedescribed, an outer incasing, shell or jacket of any suitable materialbeing employed in connection with the sewer sections to enable theconcrete while in a plastic condition to be introduced between the body1 and said outer shell or jacket, it being understood that when theconcrete has hardened sufiiciently, the-said outer shell or jacket isremoved. As said outer shell or'jacket forms no part of the presentinvention, the same has not been shown.

It is also within the scope of this inventionto make the base 2 of.suflicient depth and other dimensions to provide for the formationtherein of one or more drain channels 8 in the installation of the sewerand carrying offof the water in the bottom of the drainage while theconstruction is in progress.

By means of the construction described, a

,sanitarysewer is produced as by reason of the interior of the sectionsbeing salt glazed or of vitrified clay there is little liability ofcement or other refuse lodging in or adhering to the inner surfacethereof. The c011- struction described also greatly facilitates thebuilding of the sewer as a whole as the sections form cores or formersaround which the concrete is laid and when the sewer is complete, it ispractically continuous or without joints from one end of the line to theother. Furthermore, the weight of the sewer sections is approximatelyonly about one-half the weight of the sewer pipe section now in commonuse which admits of the same being" manufactured more economically andhandled with greater ease at all points.

By reason of the outer layer or coating of cement extending fromshoulder to shoulder.

Patented Aug. 31, 1909.

' dium for the vitrified clay sections, holding and continuously acrossthe joints between the adjoining sections, such layer or coating acts asa reinforcing and strengthening methe same in perfect alinement. Thebase or invert may be made separate from the remainder of the sectionsWhere conditions demand it for convenience in handling, the

the tubular body eing then placed upon the" base or invert in readinessfor the 'concrete coating or reinforcement;

1. As'ew'er pipe section comprising a ho'lE low cylindrical body and abase integral therewith, the inner wall of the base being coincidentWith the inner Wall of the body and the base being of greater thicknessthan base or invert beingj placed in the ditch and the body at thejunction of the body and "base to provideoffset longitudinally extendingshoulders.

2. A sewer pipe section comprising a tubnlar' body, and a relativelythick base integral with the body forming oifset longitudinal shouldersopposite the juncture of the body and base, said shoulders projectingoutward beyond the plane of the body, the base being extended at one endbeyond the body to form a seat or socket for an ad-* joining section,and the body being extended at the other end beyond the base for a likepurpose.

In testimony whereof I aflix my signature in presence of two Witnesses.

JACOB HALLEOK ZINN. Witnesses W. R. MoKoWN, J. E. MILLER.

